Substitute values into simple linear equations
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Question 2
If T = (−3 × s) + 4, find T when:
| a |  |
s = 5 | |
b | |
s = −2 | |
c | |
s = \(\dfrac{2}{3}\). |
Solution
| a | |
T | = −3 × 5 + 4 | |
| = −15 + 4 | ||||
| = −11. |
| b | |
T | = −3 × −2 + 4 | |
| = 6 + 4 | ||||
| = 10. |
| c | |
T | = −3 × \(\dfrac{2}{3}\) + 4 | |
| = −2 + 4 | ||||
| = 2. |
Note: −3 x s can be written as −3s.
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